Hey! Guess what? I am still in England.
It turns out I need a paper ticket to get on the plane, and despite (a) there being a reservation for me in my full name, (b) me having the full credentials with my passport and (c) being able to give them all details about my travel agent, they would not let me board the plane. The reason? A concern that the ticket could be used again, despite the fact that someone with said credentials and name would have checked into the reserved seat. Nuts.
Anyway, my travel agency is onto it and all going well I should be on the plane tonight, arriving a day late. So, more Heathrow fun and games for me.
More info as I get it…